Diagnosis. The male forewings have a pale yellow ground with two distinct overlays:
a grey shading that is broadly basal to the discal spot and in an oblique
postmedial band; a more sparse but uniform speckling of black scales (See
Nygmia dirtea Swinhoe comb.n). In some specimens the grey extends over the whole wing. The
female forewings are a deep rusty brown, uniformly and extensively irrorated
with black.

Taxonomic note. The male genitalia of this and the next species are similar, and have
uncus, valve and aedeagus vesica structure consistent with placement in Nygmia.